Ana Preta
type: MusicGroup
genre: brazilian hip hop
genre: funk carioca
popularity: 9
followers: 427
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x69b91db152461c940edbc53e9a8436bbf7d00ef22a56de475dc239fc49e7a753
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953999
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953999
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/31bbd173-db8a-41d7-8a40-21fb6daa2f72.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/31bbd173-db8a-41d7-8a40-21fb6daa2f72.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/31bbd173-db8a-41d7-8a40-21fb6daa2f72
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T20:20:58Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x69b91db152461c940edbc53e9a8436bbf7d00ef22a56de475dc239fc49e7a753","name":"Ana Preta","registered_at":"2026-06-16T06:54:07Z","symbol":"NIM0972276","token_address":"0xc9a4f6b77b7263ad0ab7df6cc4f34aaab1d60bb0","type":"artist","uuid":"31bbd173-db8a-41d7-8a40-21fb6daa2f72"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b91db152461c940edbc53e9a8436bbf7d00ef22a56de475dc239fc49e7a753. Chain 2 (Bitcoin): anchored in block 953999 (2026-06-16T20:20:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/31bbd173-db8a-41d7-8a40-21fb6daa2f72.json and https://artists.proofprofile.net/proofs/artist/31bbd173-db8a-41d7-8a40-21fb6daa2f72.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-16T20:20:58Z
  text: {"copyright_id":"0x69b91db152461c940edbc53e9a8436bbf7d00ef22a56de475dc239fc49e7a753","name":"Ana Preta","registered_at":"2026-06-16T06:54:07Z","symbol":"NIM0972276","token_address":"0xc9a4f6b77b7263ad0ab7df6cc4f34aaab1d60bb0","type":"artist","uuid":"31bbd173-db8a-41d7-8a40-21fb6daa2f72"}
album: Me Adora
  type: MusicAlbum
  date published: 2024-04-30
track: Stilo
  type: MusicRecording
  duration: PT3M45S
  duration ms: 225619
  explicit: false
  by artist: Thaíde
  by artist: Rincon Sapiência
  by artist: Marcelo D2
  by artist: Ndee Naldinho
  by artist: Don Cesão
  by artist: Black Alien
  by artist: Rapadura
  by artist: Ana Preta
  in album: Vamo Que Vamo Que o Som Não Pode Parar
    type: MusicAlbum
    date published: 2017-06-16
  isrc code: BXA6P1700011
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-25T02:28:54+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x3ee44ae6133dec179537a9607d8c31f7ad3c12bf18aed7afc470c7c574023090
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956304
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956304
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXA6P1700011
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:55:08Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee44ae6133dec179537a9607d8c31f7ad3c12bf18aed7afc470c7c574023090. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXA6P1700011 — a six-check JSON result.
    date published: 2026-07-02T03:55:08Z
  audio: Stilo
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 104.347
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.765
    additional property: Energy
      type: PropertyValue
      value: 0.766
    additional property: Speechiness
      type: PropertyValue
      value: 0.302
    additional property: Acousticness
      type: PropertyValue
      value: 0.17
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.052
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.827
    additional property: Loudness (dB)
      type: PropertyValue
      value: -10.602
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major